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Advanced
Ceramics.
For EXTREME WEAR PROBLEMS Finn Inc. recommends to use
EA 500 OF EA 800, Advanced Structural Ceramics. Advanced
Ceramics are much
stronger and much more Impact resistant than standard wear resistance
Ceramic materials. Our EA 500 and EA 800 are particle composite Ceramic,
a combination of Zirconia and Alumina that represent a challenge to Tungsten
Carbide Materials.
Common application for these Ceramic Tiles/Shapes are in the Oil Industry
(major
companies such as Norsk Hydro and Statoil) in
Hydro-Cyclones used for separation of oil/water and water/sand. The Oil
Industry also uses our Ceramic Nozzles in Oil Wells.
The Advanced Ceramic (also called Toughened Alumina) is also used in Air
classifiers and Fan Blades and in Fan Houses.
The extreme hardness and toughness of the Advanced Ceramics has also been
utilized in Barmac Crushers.
Other application are segments fro screw presses in connection with de-watering
of cellulose.
The Advanced Ceramic Tiles are commonly used in combination (embedded)
with our Castable Ceramic, the Ceramite to solve extreme wear spots. This
picture shows a 45° Bend (Holcim Inc.'s Granulated Slag operation
in Weirton, WV), before it is embedded in castable Ceramic (Ceramite).
The Spool is placed next to a Butterfly Valve that creates water jets
hitting the spool side on a 30-50° angle.
Special
Alumina EA 500 |
| Property |
Unit |
EA
500 Standard |
EA
500 H High Strength |
| Density |
g•cm-3 |
4.1 |
4.1 |
| Modules of
Elasticity |
Gpa |
380 |
385 |
| Poissons Ratio |
|
0.23 |
0.23 |
| Flexural
strength 1),S |
MPa |
|
|
| - Uniaxial
3-point 2), S3 |
|
470 |
720 |
| - Uniaxial
4-point 2), S4 |
|
400 |
650 |
| - Biaaxial
Concentric Ring3), Sb |
|
340 |
|
| Weibull Modulus,
m |
|
9 |
16 |
| Vickers Hardness |
GPa |
17 |
18 |
| Fracture
Toughness 4), K1c |
MPa•m-1/2 |
|
|
| -Single
Edge Notched Beam 5),K1C, SENB |
|
5.0 |
5.2 |
| -Indentation
Strength 6), K1C, IS |
|
4.5 |
4.7 |
| Thermal Conductivity |
W•M-1•K-1 |
|
|
| 25°C |
|
23 |
23 |
| 100°C |
|
21 |
21 |
| 500°C |
|
9 |
9 |
| 1000°C |
|
|
|
| Mean Coefficient
of Thermal Expansion |
K-1•106 |
|
|
| 20 - 100°C |
|
6.0 |
6.0 |
| 20 - 100°C |
|
7.7 |
7.7 |
| 20 - 1000°C |
|
8.2 |
8.2 |
|
General
Description
Special
Alumina EA 500, Standard and High Strength versions, are engineering
ceramics showing a combination of high strength, toughness and
wear resistance compared to high purity finegrained alumina. These
ceramics are fine and uniformgrained alumina-based composites
with chemical properties similar to alumina. The high strength
version, EA 500H, should be selected for the most demanding applications.
|
Toughened
Alumina EA 800 |
| Property |
Unit |
EA
500 Standard |
EA
500 H High Strength |
| Density |
g•cm-3 |
4.6 |
4.6 |
| Modules of
Elasticity |
Gpa |
340 |
340 |
| Poissons Ratio |
|
0.23 |
0.23 |
| Flexural
strength 1),S |
MPa |
|
|
| - Uniaxial
3-point 2), S3 |
|
900 |
1240 |
| - Uniaxial
4-point 2), S4 |
|
750 |
1100 |
| - Biaaxial
Concentric Ring3), Sb |
|
650 |
1000 |
| Weibull Modulus,
m |
|
9 |
20 |
| Vickers Hardness |
GPa |
16 |
16.5 |
| Fracture
Toughness 4), K1c |
MPa•m-1/2 |
|
|
| -Single
Edge Notched Beam 5),K1C, SENB |
|
7.2 |
7.3 |
| -Indentation
Strength 6), K1C, IS |
|
5.6 |
5.8 |
| Thermal Conductivity |
W•M-1•K-1 |
|
|
| 25°C |
|
17 |
17 |
| 100°C |
|
15 |
15 |
| 500°C |
|
7 |
7 |
| 1000°C |
|
|
|
| Mean Coefficient
of Thermal Expansion |
K-1•106 |
|
|
| 20 - 100°C |
|
6.3 |
6.3 |
| 20 - 100°C |
|
8.0 |
8.0 |
| 20 - 1000°C |
|
8.5 |
8.5 |
|
General
Description
Toughened Alumina EA 800, Standard and High Strength versions,
are engineering ceramics showing a superior combination of high
strength, toughness and wear resistance among Ceram Tools toughened
alumina ceramics. These ceramics are finegrained, transformation
toughened alumina-based composites. The hight strength version,
EZ 800 H, should be selected for the most demanding applications.
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